| 1 | NGC | Angoservice, Lda. | | ANG | AVCODES |
| 2 | NGC | Angoservice | | | ICAO1 |
| 3 | NGCA | NEW GREEN CITY AUTO REPAIR CENTRE I | | | SCAC4 |
| 4 | NGCD | NEXT GENERATION CARTAGE LTD | | | SCAC4 |
| 5 | NGCL | NATIONAL GYPSUM COMPANY | | | SCAC3 |
| 6 | NGCM | NAVARRO GUDINO, CLEMENTE | | | SCAC4 |
| 7 | NGCN | NOSEGAY COMPANIA NAVIERA SA | | | SCAC3 |
| 8 | NGCN | NMP GOLF CONSTRUCTION CORP | | | SCAC4 |
| 9 | NGCO | NORWEGIAN GAS CARRIERS | | | SCAC3 |
| 10 | NGCO | NORGAS CARRIERS AS | | | SCAC4 |
| 11 | NGCP | NEW GLORY CORPORATION | | | SCAC4 |
| 12 | NGCU | VALQUA NGC, INC. | | USA | BIC |
| 13 | NGCU | Nisshin Gulf Coast | | | RSRV |
| 14 | NGCX | National Gypsum (Canada) Ltd. | added 10/2003; eliminated 4/2004; 7/2005 (not listed) | | NAKINA |
| 15 | NGCX | Suburban Propane Nat-Gas Co. of New Jersey | added 1/1955; eliminated 1/1956 | | NAKINA |
| 16 | NGCX | Natural Gas Co. | 4/1947-7/1954; eliminated 1/1955 | | NAKINA |
| 17 | NGCX | Natural Gas Co. of N.J. | 1/1945-1/1946 | | NAKINA |
| 18 | NGCX | Natural Gas Co. | Jan-52 | | NRHS |
| 19 | NGCX | *SUBURBAN PROPANE NAT-GAS CO. OF NEW JERSEY [NATURAL GAS CO.] | | | PWRC |
| 20 | NGCX | +NATIONAL GYPSUM (CANADA) LIMITED | | | PWRC |
| 21 | NGCX | NATIONAL GYPSUM (CANADA) LTD | | | SCAC4 |
| 22 | NGCY | NIELSEN GRAIN COMPANY | | | SCAC4 |
| 23 | NGCZ | NORTHWEST GRAIN COOP | | | PWRC |
